Asked by Cassie

An equilateral triangle has a perimeter of 120 inches. What is the area of the triangle? Express your answer in simplest radical form.
Answered by Reiny
each side is 40
area = (1/2)(40)(40)sin60 = 800√3/2 = 400√3
Answered by KL
Whenever you see equilateral, just remember that it means all sides are equal. (tip: equil->equal, same pronounciation)
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